diff --git a/api.yaml b/api.yaml
index 96d34b0..310619c 100644
--- a/api.yaml
+++ b/api.yaml
@@ -23367,6 +23367,12 @@ paths:
           required: false
           schema:
             type: string
+        - name: subType
+          in: query
+          description: The delegation staking sub type to filter by, used with the unstakeable flag.
+          required: false
+          schema:
+            type: string
         - $ref: '#/components/parameters/queryPage'
         - $ref: '#/components/parameters/queryPageSize'
         - $ref: '#/components/parameters/querySortByCreatedDate'